/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#pragma once

// this file is shared by quake and qcc

typedef int	func_t;
typedef int	string_t;

typedef enum {ev_void, ev_string, ev_float, ev_vector, ev_entity, ev_field, ev_function, ev_pointer} etype_t;


#define	OFS_NULL		0
#define	OFS_RETURN		1
#define	OFS_PARM0		4		// leave 3 ofs for each parm to hold vectors
#define	OFS_PARM1		7
#define	OFS_PARM2		10
#define	OFS_PARM3		13
#define	OFS_PARM4		16
#define	OFS_PARM5		19
#define	OFS_PARM6		22
#define	OFS_PARM7		25
#define	RESERVED_OFS	28


enum
{
	OP_DONE,		OP_MUL_F,		OP_MUL_V,		OP_MUL_FV,		OP_MUL_VF,		OP_DIV_F,
	OP_ADD_F,		OP_ADD_V,		OP_SUB_F,		OP_SUB_V,		OP_EQ_F,		OP_EQ_V,
	OP_EQ_S,		OP_EQ_E,		OP_EQ_FNC,		OP_NE_F,		OP_NE_V,		OP_NE_S,
	OP_NE_E,		OP_NE_FNC,		OP_LE,			OP_GE,			OP_LT,			OP_GT,
	OP_LOAD_F,		OP_LOAD_V,		OP_LOAD_S,		OP_LOAD_ENT,	OP_LOAD_FLD,	OP_LOAD_FNC,
	OP_ADDRESS,		OP_STORE_F,		OP_STORE_V,		OP_STORE_S,		OP_STORE_ENT,	OP_STORE_FLD,
	OP_STORE_FNC,	OP_STOREP_F,	OP_STOREP_V,	OP_STOREP_S,	OP_STOREP_ENT,	OP_STOREP_FLD,
	OP_STOREP_FNC,	OP_RETURN,		OP_NOT_F,		OP_NOT_V,		OP_NOT_S,		OP_NOT_ENT,
	OP_NOT_FNC,		OP_IF,			OP_IFNOT,		OP_CALL0,		OP_CALL1,		OP_CALL2,
	OP_CALL3,		OP_CALL4,		OP_CALL5,		OP_CALL6,		OP_CALL7,		OP_CALL8,
	OP_STATE,		OP_GOTO,		OP_AND,			OP_OR,			OP_BITAND,		OP_BITOR
};


typedef struct statement_s
{
	unsigned short	op;
	short	a, b, c;
} dstatement_t;

typedef struct
{
	unsigned short	type;		// if DEF_SAVEGLOBGAL bit is set
	// the variable needs to be saved in savegames
	unsigned short	ofs;
	int			s_name;
} ddef_t;
#define	DEF_SAVEGLOBAL	(1<<15)

#define	MAX_PARMS	8

typedef struct
{
	int		first_statement;	// negative numbers are builtins
	int		parm_start;
	int		locals;				// total ints of parms + locals

	int		profile;		// runtime

	int		s_name;
	int		s_file;			// source file defined in

	int		numparms;
	byte	parm_size[MAX_PARMS];
} dfunction_t;


#define	PROG_VERSION	6
typedef struct
{
	int		version;
	int		crc;			// check of header file

	int		ofs_statements;
	int		numstatements;	// statement 0 is an error

	int		ofs_globaldefs;
	int		numglobaldefs;

	int		ofs_fielddefs;
	int		numfielddefs;

	int		ofs_functions;
	int		numfunctions;	// function 0 is an empty

	int		ofs_strings;
	int		numstrings;		// first string is a null string

	int		ofs_globals;
	int		numglobals;

	int		entityfields;
} dprograms_t;

